I am using my iMac ( running 10.6.7. ) and surfing the internet using both Firefox and Safari , when I go to one particular web site , I get this come on screen ..
this happens when using either Firefox or Safrai , Ive tried every thing I know to stop this happening - clear browsing history etc, - change DNS - but still no luck , even scan with Sophos . The screen shot is from when I was using Safari , when I use Firefox I get the same warning but with out the red cookie part - Any ideas how to stop this thorn in my side please

this happens when using either Firefox or Safrai , Ive tried every thing I know to stop this happening - clear browsing history etc, - change DNS - but still no luck , even scan with Sophos . The screen shot is from when I was using Safari , when I use Firefox I get the same warning but with out the red cookie part - Any ideas how to stop this thorn in my side please